In her memoir, former US First Lady Michelle Obama has ripped President Trump's spreading of the "birther" conspiracy theory against her husband Barack Obama. In excerpts from her memoir "Becoming", Michelle Obama has said he she would "never forgive" Trump for the "xenophobic" claims that her husband was not actually born in America, reports The Hill magazine.

"The whole thing was crazy and mean-spirited, of course, its underlying bigotry and xenophobia hardly concealed," the former First Lady wrote. "But it was also dangerous, deliberately meant to stir up the wingnuts and kooks.